3LM
1-4-3
(3) Paper misfeeds
Problem
Causes/check procedures
Corrective measures
(1)
A paper jam in the
paper feed section is
indicated during
copying (no paper
feed from cassette
3).
Jam code 12
Paper is extremely curled.
Change the paper.
Check if the paper feed pul-
ley, forwarding pulley and
separation pulley of cas-
sette 3 are deformed.
Check visually and replace any deformed pulleys.
Broken feed switch 3 actua-
tor.
Check visually and replace switch.
Defective feed switch 3.
Run maintenance item U031 and turn feed switch 3 on and off
manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
Check if PF paper feed
clutch 1 malfunctions.
Run maintenance item U247 and select PF paper feed clutch 1 on
the touch panel to be turned on and off. Check the status and rem-
edy if necessary.
Electrical problem with PF
paper feed clutch 1.
Check (see page 1-4-7).
(2)
A paper jam in the
paper feed section is
indicated during
copying (no paper
feed from cassette
4).
Jam code 13
Paper is extremely curled.
Change the paper.
Check if the paper feed pul-
ley, forwarding pulley and
separation pulley of cas-
sette 4 are deformed.
Check visually and replace any deformed pulleys.
Broken PF feed switch
actuator.
Check visually and replace switch.
Defective PF feed switch.
With 5 V DC present at YC3-7 on the PF main PWB, check if YC3-
5 on the PF main PWB remains low or high when the PF feed
switch is turned on and off. If it does, replace the PF feed switch.
Check if PF paper feed
clutch 2 malfunctions.
Run maintenance item U247 and select PF paper feed clutch 2 on
the touch panel to be turned on and off. Check the status and rem-
edy if necessary.
Electrical problem with PF
paper feed clutch 2.
Check (see page 1-4-7).
(3)
A paper jam in the
paper feed section is
indicated during
copying (misfeed in
paper feeder vertical
paper conveying sec-
tion).
Jam code 19
Broken feed switch 3 actua-
tor.
Check visually and replace switch.
Defective feed switch 3.
Run maintenance item U031 and turn feed switch 3 on and off
manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
Y1120
2
0-
4
Service Manual
Summary of Contents for PF-720
Page 1: ...PF 720 Option Copier SERVICE MANUAL Code Y112020 4...
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Page 11: ...3LM This page is intentionally left blank...
Page 15: ...3LM 1 1 4 This page is intentionally left blank Service Manual Y112020 4...
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Page 39: ...3LM 1 4 10 This page is intentionally left blank Service Manual Y112020 4...
Page 53: ...3LM 2 2 2 This page is intentionally left blank Service Manual Y112020 4...
Page 59: ...3LM 2 4 2 This page is intentionally left blank Service Manual Y112020 4...
Page 61: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 04 2010 1ST EDITION 61 Y112020 4...